Atari 520ST: Difference between revisions

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* Joystick/mouse: two DE‑9 male (underside/front right). Port 0 is mouse/joystick; Port 1 joystick; +5 V on pin 7; ground on pin 8.<ref>{{cite web |url=https://info-coach.fr/atari/hardware/interfaces.php |title=Mouse/Joystick connectors |publisher=info-coach.fr |access-date=2025-08-13}}</ref>

* Power (520ST/260ST external PSU): 7‑pin round DIN on computer: +5 V (multiple pins), +12 V, −12 V, grounds. Typical Atari spec: +5 V up to ~3 A, +12 V ~0.03–1 A (model‑dependent), −12 V ~0.03 A (used by RS‑232).<ref>{{cite web |url=https://wiki.icomp.de/wiki/Powersupply_FAQ |title=Power Supply FAQ – Atari 260/520ST 7‑pin DIN pinout (PS31/C070102‑3) |publisher=Individual Computers Wiki |access-date=2025-08-13}}</ref>

~~== Gallery ==~~

The original 520ST uses the “short‑case” shell (no internal drive/PSU) and shipped with an external SF354 3.5" drive and separate PSU brick. Regional color and badge variations exist; display was typically via SC1224 color or SM124 mono monitor.<ref>{{cite web |url=https://www.atarimagazines.com/v4n4/interiors.php |title=Interiors: Opening up the 520ST |publisher=Antic |date=1985-08 |access-date=2025-08-13}}</ref>

== Display and Graphics ==

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 * Joystick/mouse: two DE‑9 male (underside/front right). Port 0 is mouse/joystick; Port 1 joystick; +5 V on pin 7; ground on pin 8.<ref>{{cite web |url=https://info-coach.fr/atari/hardware/interfaces.php |title=Mouse/Joystick connectors |publisher=info-coach.fr |access-date=2025-08-13}}</ref>
 * Power (520ST/260ST external PSU): 7‑pin round DIN on computer: +5 V (multiple pins), +12 V, −12 V, grounds. Typical Atari spec: +5 V up to ~3 A, +12 V ~0.03–1 A (model‑dependent), −12 V ~0.03 A (used by RS‑232).<ref>{{cite web |url=https://wiki.icomp.de/wiki/Powersupply_FAQ |title=Power Supply FAQ – Atari 260/520ST 7‑pin DIN pinout (PS31/C070102‑3) |publisher=Individual Computers Wiki |access-date=2025-08-13}}</ref>
-== Gallery ==
-The original 520ST uses the “short‑case” shell (no internal drive/PSU) and shipped with an external SF354 3.5" drive and separate PSU brick. Regional color and badge variations exist; display was typically via SC1224 color or SM124 mono monitor.<ref>{{cite web |url=https://www.atarimagazines.com/v4n4/interiors.php |title=Interiors: Opening up the 520ST |publisher=Antic |date=1985-08 |access-date=2025-08-13}}</ref>
 == Display and Graphics ==